Accepted By Leading Authorities As A Simple And Accurate Method For Discovering Congenital Color Blindness And Red-green Blindness Each In Two Forms Complete And Incomplete * Includes Four Special Plates For Tests To Determine The Kind And Degree Of Defect In Color Vision * Makes Use Of The Peculiarity That In Red-green Blindness Blue And Yellow Appear Remarkably Bright Compared With Red And Green * Color Plates Encased In Specially Designed Album-type Books For Ease Of Handling * Detailed Instructions Included
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David Jones - 2024-03-03
Quick delivery, superior quality, and great value for money. The customer service team was also very accommodating. Will definitely be a repeat customer.